package com.shopping.framework.druid;

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.sql.DataSource;

/**
 * Druid自动配置
 *
 * @create 2017-04-05
 */

@Configuration
@ConditionalOnClass(DruidDataSource.class)
@EnableConfigurationProperties(DruidMonitorProperties.class)
@ConditionalOnProperty(prefix = "druid.monitor", havingValue = "enabled", value = "enabled", matchIfMissing = false)
@AutoConfigureAfter(DataSource.class)
public class DruidMonitorAutoConfiguration {

    @Autowired
    private DruidMonitorProperties properties;

    /**
     * 注册一个StatViewServlet
     *
     * @return ServletRegistrationBean
     */
    @Bean
    public ServletRegistrationBean druidStatViewServlet() {
        //org.springframework.boot.context.embedded.ServletRegistrationBean提供类的进行注册.
        ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(new StatViewServlet(), properties.getDruidStatView());

        //添加初始化参数：initParams

        //白名单：
        servletRegistrationBean.addInitParameter("allow", properties.getAllow());
        //IP黑名单 (存在共同时，deny优先于allow) : 如果满足deny的话提示:Sorry, you are not permitted to view this page.
        servletRegistrationBean.addInitParameter("deny", properties.getDeny());
        //登录查看信息的账号密码.
        servletRegistrationBean.addInitParameter("loginUsername", properties.getLoginUsername());
        servletRegistrationBean.addInitParameter("loginPassword", properties.getLoginPassword());
        //是否能够重置数据.
        servletRegistrationBean.addInitParameter("resetEnable", properties.getResetEnable());
        return servletRegistrationBean;
    }

    /**
     * 注册一个：filterRegistrationBean
     *
     * @return FilterRegistrationBean
     */
    @Bean
    public FilterRegistrationBean druidStatFilter() {

        FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(new WebStatFilter());

        //添加过滤规则.
        filterRegistrationBean.addUrlPatterns(properties.getDruidWebStatFilter());

        //添加不需要忽略的格式信息.
        filterRegistrationBean.addInitParameter("exclusions", properties.getExclusions());
        return filterRegistrationBean;
    }

}